always stalked or occurs on much-decayed stumps. At first, for a 

 few days, it is white, then takes pale brown, and finally chocolate 

 brown. The stalk is practically black and the hymenium pallid. It 

 is white only at first, and the color change to brown is assumed but 

 slowly." 



A piece of the pileus, on comparison, seems the same as Polyporus 

 Talpae of American tropics (cfr. Myc. Notes, Polyporoid Issue, 

 page 36), and when I first received it, I referred it to that species. 

 The specimen just received, however (Fig. 771 much reduced), shows 

 it is mesopodial, and it must be classed in section Ovinus. Polyporus 

 Talpae (cfr. figure 360 loc. cited) is merismatoid, and goes in the 

 Merismus section. Notwithstanding this material difference, I have 

 a suspicion that they are about the same species. The pores of 

 Polyporus mesotalpae are certainly smooth. I have recorded the 

 spores of Polyporus Talpae "minutely rough." This record was 

 made from the original specimen at Kew. I have two collections 

 from tropical America, but find no spores in either. Excepting this 

 slight spore difference, which is not sure, and its different stipe in- 

 sertion, I can find no difference between the two species. 



MYCOCITRUS AURANTIUM (Fig. 772), FROM P. PIO 

 BUCK, BRAZIL. There is great merit in Alfred Moeller's work 

 on Brazilian fungi in several respects. It is systematic, it is well 

 illustrated, it is accu- 

 rate, and it is practical 

 to determine plants from 

 it. That can be said of 

 very few works that 

 have been written on 

 mycology. When Moel- 

 ler's work appeared, it 

 made known a new field 

 of Hypocreaceae. They 

 are mostly large plants, 

 several inches in diame- 

 ter, evidently very con- 

 spicuous when they 

 grow, and .which seem 

 never to have been col- 

 lected before. Several 

 new genera are pro- 

 posed and good ones, 

 too, apparently Myco- 

 citrus, Mycomalus, As- 

 copolyporus, that grew 

 encircling living 

 branches. Apparently 

 they are epiphytes, 

 which upsets the whole 

 idea of the mode of life 



565 



